Ore-crusher.



No. 727,958. PATENTEDMAY 12 1903. J. A. JOHNSON.

ORE URUSHER.

APPLICATION FILED JULY 26,1901. I N0 MODEL. I 2 SHEETS-SHEET 1.

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APPLICATION FILED JULY 26, 1901. I N0 MODEL. 2 SHEETS-SHEET 2.

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ATENT JOSEPH ASBURY JOHNSON, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OFONE'HALF TO GEORGE H. STEWART, OF LOS ANGELES, CALIFORNIA.

ORE-CRUSHER.

SPECIFICATION forming part of Letters Patent No. 727,958, dated May 12,1903. Application filed July 26, 1901. Serial No. 69,821. (No model.)

T0 at whom it may concern.-

Be it known that'I, JOSEPH ASBURY J OHN- SON, a citizen of the UnitedStates, residing at Los Angeles, in the county of Los Angeles and Stateof California, have invented a new and useful Ore-Crusher, of which thefollowing is a specification.

This invention relates to apparatus for reducing or pulverizingmaterial, and particularly for crushing oreor quartz to a find state orcondition; and some of theolojects of this invention are to provide anapparatus of this general character which will be simple and cheap inconstruction and at the same time positive and effective in operation.

Another object of the invention is to provide an apparatus embodyingdirect crushing action combined with a rubbing action, so as to reducethe material operated upon to a finely-divided state.

A further object of the invention is to provide an apparatus constructedto receive and pass portions of material foreign to that operated uponand which is practically uncrushable and to do so without injury'to theapparatus.

With these and other. objects in view the invention consists,essentially, in the ,construction, combination, and arrangement of partssubstantially as more fully described in the following specification andillustrated in the accompanying drawings, forming part.

of this application, in which Figure 1 is a top plan View of anapparatusembodying the improvements; and Fig. 2 is a side elevationalview, partly in section, showing one side of the apparatus removed.

Similar characters of reference designate corresponding parts throughoutthe several ceive the material to be operated upon and with a stationaryor movable crusher-bed 3, preferably removably connected with the end 4of the frame, desirably by means of a dovetailed tongue-and-grooveconnection 5, substantially as shown in Fig. 2 of the drawings, wherebythe crusher-bed may be removed when injured or worn and a new oneintroduced.

Mounted in bearings 6 in the frame is a shaft 7, carrying balance-wheels8 and 9 and a pulley or band wheel 10, adapted to receive a belt or bandactuated by any suitable driving mechanism or motor, (not shown,) aswill be readily understood. The intermediate portion of said shaft ispreferably constructed with an eccentric 11, double-cam, or otherconstruction to impart motion, whereon is mounted one end of an arm 12,preferably provided with a dovetailed slotl3 to receive a dovetailedtongue or, projection 14 upon a movablejaw 15, substantially as shown inFig. 2 of the drawings, whereby the latter maybe renewed or replacedwhen injured or worn. By means of this construction the movable jaw 15is caused to travel up and down against the crusher-bed by therevolution of theshaft'V, through the action of the eccentric 11thereon, thereby causing a rubbing action of the material feeding downbetween the crusher bed 3 and the movable jaw 15 and tending to finally.reduce the material operated upon. Upon the other side of the arm 12 ispreferably secured one or more hooks or other devices,16, constructed toreceive, preferably, a spring or like device 17', which may be connectedat the opposite end thereof with an adjusting-rod or other device 18,preferably adjustably mounted in the end 19 of the frame by means ofjam-nuts 20, substantially as illustrated in Fig. 2 of the drawlugs.

It will be understood that any number of springs 17. may be employed tonormallyretract the arm 12 or that other means maybe employed for thispurpose if found desirable in practice.

The frame of the apparatus may be provided with parallel guideways'21and 22, 0on structed to movably receive a follower-block 23, constructedto receive, preferably, one end of a toggle or other device 24, theopposite end whereof may engage the free end of the arm 12,substantially as shown in Fig. 2, and, if desired, the arm may be cutaway to receive a recess bearing block 25, constructed to receive thespherical or rounded extremity of the toggle, and the follower 23 may belikewise provided with a recess bearing-block 26 to movably receive theopposite end of said toggle, essentially as illustrated.

If desired, in practice a fiat bearing-plate may be employed instead ofthe toggle 24. and may be provided with rounded ends to work in concavesin the arm 12 and the followerblock 23, or a plurality of toggles may beemployed, if preferred.

Mounted in the end 19 of the frame are rods and bolts 27 27, preferablyprovided with jamnuts 28 28. To regulate the distance,the same may passbeyond the end 19, and said end may be provided with an annular flange29 to receive one end of a spiral spring or other device 30, theopposite end whereof engages a thrust collar 31, preferably interiorlyscrew-threaded to engage the screw threads on said rod or bolts 27 27and to be rotated thereon by means of tools inserted in the openings orrecesses 32 thereof to regulate the tension of said spring, and the freeextremity of said rods or bolts preferably engages recesses 33 33 in thefollower-block 23, substantially as illustrated in Fig. 2 of thedrawings. It will be understood that any number of these spring-actuatedplunger-rods may be employed and that other devices capable of the samefunction maybe used in lieu thereof if found preferable.

From the foregoing construction it will be understood that when piecesof practically uncrushable material come between the crusher-bed 3 andthe movable jaw 15 the latter will yield and allow the material to passbetween the crusher-bed and the movable jaw.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is-

1. In ore-crushing machines, a frame the end thereof provided with adovetailed groove, a crusher-bed having a dovetailed tongue adapted tobe removably secured to the end of the frame, a drive-shaft mounted inthe frame, an arm secured to the shaft and having a dovetailed slottherein, a movable jaw removably fastened to the said arm, anadjusting-rod adjustably mounted in the frame, a spring detachablyconnected to the said rod and to the rear face of the said arm and meansadjustably connected to the rear end of the frame for limiting the rearmovement of the said arm.

2.-In ore-crushing machines, a frame the front end thereof having adovetailed groove therein,a crusher-bed provided with astraight face andhaving a dovetailed tongue adapted to be removably attached to the endof the frame, a drive-shaft, an eccentric fastened to the said shaft, anarm havingadovetailed slot in the front face thereof, a movable jawdetachably secured to the said arm, an adjusting-rod adjustably mountedin the rear end of the frame, a spring detachably connected to the saidrod and to the rear face of arm and means elastically and adjustablylimiting the rear movement of the said arm and movable jaw carriedthereby.

3. In ore-crushing machines, a frame, a crusher-bed secured to theframe, a driveshaft, an arm mounted on the shaft, a movable jaw fastenedto the arm, a movable rod adjustably mounted in the rear end of theframe, a spring detachably connected to the said rod and to the rearface of said arm, a toggle, a follower-block and means for adjustin gand elastically supporting said block.

4. In ore-crushing machines, a crusher-bed secured to one end of aframe, a drive-shaft mounted in the frame, an arm fastened to the shaft,a movable jaw secured to the arm, an adjustable rod adj ustably securedin the rear end of the frame, a spring connected to one end of said rodand to the rear face of the said arm, a toggle supported at one end bythe arm and at the opposite end by the follower-block, thefollower-block, a movable rod engaging the follower-block and aspringthereon to force the rod against the block.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOSEPH ASBURY JOHNSON.

Witnesses:

L. B. ALDERETE, AMELIA GUEST.

